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公开(公告)号:US20170150073A1
公开(公告)日:2017-05-25
申请号:US15423397
申请日:2017-02-02
Inventor: Takayoshi YAMADA , Masayuki TAKASE , Tokuhiko TAMAKI , Masashi MURAKAMI
CPC classification number: H04N5/359 , H01L27/14603 , H01L27/14609 , H01L27/1461 , H01L27/14612 , H01L27/14623 , H01L27/14636 , H01L27/14645 , H01L27/14667 , H04N5/23232 , H04N5/265 , H04N5/357 , H04N5/361 , H04N5/374 , H04N5/378
Abstract: An imaging device comprises at least one unit pixel cell. Each of them comprises: a photoelectric conversion layer having a first and second surfaces; a pixel electrode and a shield electrode located on the first surface and separated from each other, a shield voltage being applied to the shield electrode; an upper electrode located on the second surface and opposing to the pixel electrode and the shield electrode, a counter voltage being applied to the upper electrode; a charge accumulation node electrically connected to the pixel electrode; and a charge detection circuit electrically connected to the charge accumulation node. An absolute value of a difference between the shield voltage and the counter voltage is larger than an absolute value of a difference between the counter voltage and a voltage of the pixel electrode.
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公开(公告)号:US20230247315A1
公开(公告)日:2023-08-03
申请号:US18190002
申请日:2023-03-24
Inventor: Yasuo MIYAKE , Masashi MURAKAMI , Tokuhiko TAMAKI , Yoshiaki SATOU
IPC: H04N25/53 , H10K39/32 , H01L27/146
CPC classification number: H04N25/53 , H10K39/32 , H01L27/14609 , H01L27/14612
Abstract: An imaging device including pixels each including a photoelectric converter that converts light into a signal charge; and controller, where the controller causes the pixels to perform global shutter operation in a first frame period and causes the pixels to perform rolling shatter operation in a second frame period different from the first frame period.
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公开(公告)号:US20230224600A1
公开(公告)日:2023-07-13
申请号:US18180708
申请日:2023-03-08
Inventor: Kazuko NISHIMURA , Tokuhiko TAMAKI , Masashi MURAKAMI
IPC: H04N5/335 , H01L27/146
CPC classification number: H04N25/585 , H04N25/62 , H04N25/65 , H04N25/75 , H01L27/14643 , H04N25/778 , H04N25/77 , H01L27/14636 , H01L27/14614
Abstract: An imaging device including: a first imaging cell including a first photoelectric converter that generates a first signal; and a second imaging cell including: a second photoelectric converter that generates a second signal; and a capacitor having a first and second terminal, the first terminal electrically coupled to second photoelectric converter. An area of the first photoelectric converter is greater than an area of the second photoelectric converter in a plan view, the first imaging cell has a first number of saturation charges, and the second imaging cell has a second number of saturation charges, the first number of saturation charges is greater than the second number of saturation charges, and the capacitor has capacitance that causes the second number of saturation charges of the second imaging cell to become greater than the first number of saturation charges of the first imaging cell.
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公开(公告)号:US20220320161A1
公开(公告)日:2022-10-06
申请号:US17712873
申请日:2022-04-04
Inventor: Masashi MURAKAMI , Kazuko NISHIMURA , Yutaka ABE , Yoshiyuki MATSUNAGA , Yoshihiro SATO , Junji HIRASE
IPC: H01L27/146
Abstract: An imaging device including: a photoelectric converter that converts incident light into a signal charge; a node to which the signal charge is input; a transistor having a source and a drain, one of the source and the drain being connected to the node; and a capacitive element. The capacitive element including a first electrode, a second electrode and a dielectric film sandwiched between the first electrode and the second electrode, the first electrode being connected to the other of the source and the drain of the transistor, the second electrode being connected to a voltage source or a ground. The transistor is configured to switch a first mode and a second mode, a sensitivity in the first mode being different from a sensitivity in the second mode.
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公开(公告)号:US20220224847A1
公开(公告)日:2022-07-14
申请号:US17708871
申请日:2022-03-30
Inventor: Masashi MURAKAMI , Kazuko NISHIMURA , Yasuo MIYAKE , Yasunori INOUE
IPC: H04N5/355
Abstract: An imaging device including a pixel that includes: a photoelectric converter that converts light into a charge; a charge accumulation region to which the charge is input; and an amplifier transistor that includes a gate electrically connected to the charge accumulation region. The amplifier transistor being configured to output a signal that corresponds to a potential of the charge accumulation region. The imaging device further including a detection circuit that is configured to detect a level of the signal from the amplifier transistor, wherein a sensitivity of the pixel is caused to be increased, in a case where the level detected by the detection circuit is greater than a first threshold value.
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公开(公告)号:US20220109800A1
公开(公告)日:2022-04-07
申请号:US17551720
申请日:2021-12-15
Inventor: Yoshiaki SATOU , Shota YAMADA , Masashi MURAKAMI , Yutaka HIROSE
Abstract: An imaging device including a semiconductor substrate that includes a first impurity region; a photoelectric converter that is coupled to the first impurity region and that converts light into charges; a capacitor that includes a first terminal and a second terminal, the first terminal coupled to the first impurity region; voltage supply circuitry coupled to the second terminal; a first transistor including the first impurity region as a source or a drain; and control circuitry. The control circuitry is programmed to cause the voltage supply circuitry to supply a first voltage in a first period, and to cause the voltage supply circuitry to supply a second voltage different from the first voltage in a second period continuous to the first period, the first transistor being in on-state in the first period, the first transistor being in off-state in the second period.
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公开(公告)号:US20210227157A1
公开(公告)日:2021-07-22
申请号:US17224912
申请日:2021-04-07
Inventor: Masaaki YANAGIDA , Masashi MURAKAMI , Sanshiro SHISHIDO
Abstract: An imaging device that includes pixels arranged in a matrix having rows and columns, the pixels including first pixels and second pixels different from the first pixels, the first pixels and the second pixels being located in one of the columns, each of the pixels including a photoelectric converter that converts incident light into signal charge, and a first transistor having a first gate, a first source and a first drain, the first gate being coupled to the photoelectric converter. The imaging device further includes a first line coupled to one of the first source and drain of the first pixels; a second line coupled to one of the first source and drain of the second pixels; a third line coupled to the other of the first source and drain of the first pixels; and voltage circuitry coupled to the third line and that supplies a first and second voltage.
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公开(公告)号:US20210195122A1
公开(公告)日:2021-06-24
申请号:US17173031
申请日:2021-02-10
Inventor: Shinichi MACHIDA , Masashi MURAKAMI , Takeyoshi TOKUHARA , Masaaki YANAGIDA , Sanshiro SHISHIDO , Manabu NAKATA , Masumi IZUCHI
Abstract: An imaging apparatus includes a unit pixel including a pixel electrode; a counter electrode facing the pixel electrode; a photoelectric conversion layer disposed between the pixel electrode and the counter electrode; and a computing circuit that acquires a first signal upon a first voltage being applied between the pixel electrode and the counter electrode, the first signal corresponding to an image captured with visible light and infrared light and a second signal upon a second voltage being applied between the pixel electrode and the counter electrode, the second signal corresponding to an image captured with visible light, and generates a third signal by performing a computation using the first signal and the second signal, the third signal corresponding to an image captured with infrared light.
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公开(公告)号:US20210167101A1
公开(公告)日:2021-06-03
申请号:US17173885
申请日:2021-02-11
Inventor: Masashi MURAKAMI , Kazuko NISHIMURA , Yasuo MIYAKE , Yasunori INOUE
IPC: H01L27/146 , H01L27/142 , H01L31/14
Abstract: An imaging device includes: a photoelectric converter including first and second electrodes, and a photoelectric conversion layer located between the first electrode and the second electrode; a voltage supply circuit applying a bias voltage between the first electrode and the second electrode; an amplifier transistor including a gate electrically connected to the second electrode, the amplifier transistor configured to output a signal corresponding to a potential of the second electrode; and a detection circuit configured to detect a level of the signal from the amplifier transistor. The voltage supply circuit applies the bias voltage in a first voltage range when the level detected by the detection circuit is greater than or equal to a first threshold value, and applies the bias voltage in a second voltage range that is greater than the first voltage range when the level detected by the detection circuit is less than a second threshold value.
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公开(公告)号:US20210082977A1
公开(公告)日:2021-03-18
申请号:US17095019
申请日:2020-11-11
Inventor: Junji HIRASE , Masashi MURAKAMI
IPC: H01L27/146 , H04N5/369 , G02B7/04 , H04N5/3745 , H04N5/378 , H04N5/363
Abstract: An imaging device including: a pixel including a photoelectric converter including a pixel electrode, a counter electrode, and a photoelectric conversion film, the photoelectric conversion film converting light into a charge; a first transistor having a first source, a first drain, a first gate insulating film, and a first gate, one of the first source and the first drain being connected to the pixel electrode; and a second transistor having a second source, a second drain, a second gate insulating film, and a second gate, one of the second source and the second drain being connected to the other of the first source and the first drain without transistor intervention. An effective thickness of the second gate insulting film is smaller than an effective thickness of the first gate insulting film, and the imaging device includes pixels including the pixel, the pixels each including the first and second transistor.
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